In the ideal gas law equation what does the variable "n" stand for

What was the biggest role in connecting rome with rich regions

Even though both ww1 and ww2 were in many ways the same conflict with basically the same countries facing off against each other, the way each war started was significantly different. the question is how what were the differences on how they started

Someone who accepted the beliefs of social darwinism would have also agreed with which of these statements?